Good job! thought I might add that when checking shorts to the stator you really need to make sure to get down to bare metal, not doing so will give a false reading if there is a coil to stator short. Just tapping the meter lead to the stator isn't going to work in most cases. Stators are made of many laminated/insulated stacked steel sheets, this helps eddy currents from robbing efficiency and producing heat.
Great - easy to understand ... I got a E-TON VIPER 50 ST with no spark . have been checking everything ,switches , wires still no spark. Repaired a switch . and a connection connector . but still got the problem . now time to check the stator and pi up unit. Its an old bike someone been doing some a lot of changes on it . It's fun working on it . ( retired old man nothing better to do ) just enjoying it.
These instructional videos are great and all but you really need to have a repair manual for your specific vehicle and go by that. Your bike may have a different stator then the one in this video. You get the gist here but to get a 100% accurate assessment follow the manual.
A resistance measurement only at room temperature is not sufficient to verify a stator is good. When a stator starts to fail, they often fail only when they get to operating temperature. I have a box of motorcycle stators at home that measure in spec for resistance and do not work properly. Most provide weak spark when cold and no spark when hot. A resistance measurement is only going to tell you if the stator has totally failed, it does not tell you the stator is going to work
I thought I heard you say the two yellow wires were lighting , later they/it (?) was/were battery charging wire/s, in which case I guess one yellow would go to a rectifier (?) , maybe it doesn't matter which one connects to rectifier and which one is used for lighting?. Is one of the yellows lighting and one for charging? If your stator comes with just one yellow wire, then that would likely be for lights period?
Great video! Hope you can help on this issue: A few days ago, while riding my SYM VS 125, a lot of smoke started coming out of the front of the bike and the engine started to fail. I turned off the ignition and cut the battery current. At home I took it apart to see what was going on and the rectifier was visibly burnt. I took the bike to a workshop where they changed the rectifier and the battery, but they didn't solve the problem. The new rectifier continues to heat up a lot and too fast, as if something is short circuiting. As they couldn't solve the problem and it still cost me a few €€, I picked up the motorcycle with the fault. Tests i have done: - the battery is new and has 13.1V before the starter - with the three yellow wires from the stator connected to the rectifier, the bike works fine at low revs, fails at medium and the rectifier heats up uncontrollably; with these wires disconnected from the rectifier, the bike works well at any speed, but as we know, the battery is not charged - at idle the 3 yellow wires measure about 40V from stator - the resistant test on stator show equal values on three wires; no ground conductivity; no open circuit on each coil - apparently all the masses are well connected. Any idea what it could be causing this recurrent failure of the rectifier? Note: traditional G6Y carburetor engine with electronic rectifier and CDI, year 2010.
You still need to keep in mind even though bench testing this turns out to be good, once these components heat up there could be a short to ground once you heat up, so it would be good to test this on the bike after you run the motorcycle for a little bit and have everything hot... Or if you suspect this being bad. test it before you remove it while it is hot, metal tends to expand...
Hi when u check omh and it says 20 ohms. I cant do that test i only have 3 single yellow wires. So do i do that test , all the other tests are good. My first ohm test, like urs was 0.8 so it must be good on that also
Great job with the video. Clear instructions. Would have been good if you had covered how to test when the stator is installed in the bike. Also, I was wondering where you would look for proper resistance ranges for each of the circuits.
How do you test for shorted turns? ie. if the coil has a 100 turns and 1 turn is shorted to itself it won't change the DC resistance of the but it will nullify most of the output of it.
Good video. Unfortunately I have changed out many stators that have passed all these tests and ended up fixing the issue. Never 100% count on a bench tested stator to be a good stator. If the stator doesn't pass the tests then you have a good idea what the problem is.
@@datboilarry_8219 yes and no. Sometimes it will cut out spark sometimes it will just stop charging the battery, it depends on how the system is wired. I enjoy helping people with this type of thing so feel free to ask as many questions as you want.
ty for helping us shadetree mechanics...lol i did as you sead and my old stator did not pass yhe ohms test got a new one now charging with np thank you
When checking resistance (ohms) between the two output leads, is it possible to have too little resistance? If mine reads only 0.1 or 0.2, is my stator bad?
I my stator has the continuity okey and the resistance is okay but it is not giving enough charge to the battery at higher rev, then what might be the problem. And the battery is 1 year old and does hold charge...
i tested my stators ignition wires like you showed in the video but instead of the continuous beep it just beeped once then went silent Note: multimeter does the continuous beep with other wires. what could be the problem? the ignition wire terminal or the wires itself?
I've got a road registered pitbike a Braaap SS I have an electric start yx150cc in it ,and one of the yellow charge wires from the stator was going to a green wire on the rec/reg ,the stator seems to be to hot, as I've never had charge problems with this type of motor,its still charging but not enough
Hy when i meassure the ohms i get 0.7 all wires..evrything is good how i measure same with the video but i dont get any voltage to the cables when bike is running
I recently replace my atv engine The previous stator had a yellow and a white wire (which simply matched up with the wiring loom) The new engine stator had two yellow wires(no white one) Can I just connect one of the yellow wires to the white one. And the other yellow to yellow regardless
Heat is the most common cause of failure. When the motor gets overheated the oil gets extremely hot and actually starts to cook the stator. This will eventually cause the stator to fail.
wait im lost. i have over 5 workshop manuals ( i have one for a yamaha vino open right now ) and they ALL say that there must be continuity to ground from yellow or white. something is wrong there buddy... even on a gy6 scooter there must be continuity. is it a different type of stator ? it look identical to mine on my gy6 scooter
hi man..i check my stator as like you show...all the results show that the stator is ok...but when i start the engine i check the volt and gives only 5.5v...i have a honda cm 125 6v system...you have any idea whats happen..??
These are testing instructions for our stators. Not an OEM stator. For the OEM stator testing you would need to contact Honda on how to test it and the values that you should have.
do both yellow wires from the sator go to the yellow wires on the rec/reg ,one of mine was going to the green wire on the rec/reg its was charging but not enough
It would all depend on the stator and the reg/rec. Our video is just discussing how to test our stators. I would recommend checking with the manufactures wiring diagram to see how yours should be connected.
did you solve the problem? I have the same problem and electricians do not know what the problem is. I have new stator, new magneto, it has ground, bike starts but no voltage for lights.
Hi i need help i fixed my yamaha phazer 480 piston and when i put it back together there's no spark on my spark plugs but the lights come on everytime i pull the pull start and before i was going to fix it there was what could the problem be?
Unfortunately there are a ton of things that could be causing this. I would recommend contact a Yamaha service center to get the proper troubleshooting steps to figure out what your problem could be.
+hellkristia9 That would all depend on the stator and what it is in. Some stators have a grounding lug on the body of the stator. Other stators have a ground lead off of the stator that is supposed to connect to a frame ground. I would recommend contacting the manufacture of the stator to find out how it is supposed to be grounded.
Subscribe can you confirm this is the same testing on a Yamaha aerox mate I’ve done your tests but when one pin is in any yellow and you Touch the stator mine beeps I’ve had my bike with these problems basically on full throttle either on road or on stand the bike revs revs then basically cuts out like as if you switch the keys off just please confirm no beep for Shorts is perfect mine beeps
How do I test a 1985 350x stator ? I think it has 1 ground coming out and 2 other wires . Maybe one’s an exciter wire and the other for light power ? Thanks
Hey Driftingabstract what was your symptoms? I have the trail tech stator kit as well and have a weird popping onve the bike warms up I know this is 5 yrs ago but figured I would ask 😉
These troubleshooting instructions are for our stators that have a floated ground. For correct testing procedures for your stator you will want to contact the manufacture.
No beep between the two wires means a broken coil/wire, this is not good. A beep from any of the wire leads off the stator/coils to the steel stator itself is bad, that means the coil has shorted. Time for a new stator.
testing at the plug, when you 1st hit the start switch, i get a spark for about 2 - 3 cranks, then i get no spark for about 5 - 6 cranks, then as i continue cranking the motor over, i 'll a couple more sparks, and then nothing again ???????
Unfortunately we do not have any info on how to test that stator or troubleshoot it. This instructional video for for the testing of a Trail Tech Stator. I would recommend contacting a Yamaha service center on how to troubleshoot this correctly.
+Ian Goldsmith The best thing I would recommend would be to contact your local KTM service center. They can give you the readings for that stock stator.
![HOW TO TEST A STATOR / WHAT IS A STATOR [step by step] GY6](http://i.ytimg.com/vi/VoXYzQ61tRM/mqdefault.jpg)
![HOW TO TEST A STATOR / WHAT IS A STATOR [step by step] GY6](/img/tr.png)
One of the best instructional videos I've ever seen. Great Job.
Agreed
Good job! thought I might add that when checking shorts to the stator you really need to make sure to get down to bare metal, not doing so will give a false reading if there is a coil to stator short. Just tapping the meter lead to the stator isn't going to work in most cases. Stators are made of many laminated/insulated stacked steel sheets, this helps eddy currents from robbing efficiency and producing heat.
The absolute best tutorial ive come across. helped so much, thank you. good video
Perfect explaination for someone who never did such a thing! Top man! I hope I will fix my bike soon!
Great - easy to understand ... I got a E-TON VIPER 50 ST with no spark . have been checking everything ,switches , wires still no spark. Repaired a switch . and a connection connector . but still got the problem . now time to check the stator and pi up unit. Its an old bike someone been doing some a lot of changes on it . It's fun working on it . ( retired old man nothing better to do ) just enjoying it.
Hello, everyone this video is just what i need to fix my 1964
Tomos ,thanks for the video braynt ☆☆☆☆☆☆
Exellent video Braynt! Perfectly explain! Thanks hopefully it helps me find my problem with my bike.
Just FYI for any future videos.That "AUDIO SYMBOL" is called the continuity symbol. Thank you for the video though big help.
One of the best video ever on utube
Someday someone will make a video where you can actually see the multi-meter symbols and numbers.
I can see them very well.
Excellent video. Good graphics and explained
Nice vidéo that doesnt take 25 min to watch! Thanks
These instructional videos are great and all but you really need to have a repair manual for your specific vehicle and go by that. Your bike may have a different stator then the one in this video. You get the gist here but to get a 100% accurate assessment follow the manual.
Thank you soooo much. This video explains everything perfect and quick.
Best video by far!
Thank you very much for a valuable lesson
A resistance measurement only at room temperature is not sufficient to verify a stator is good. When a stator starts to fail, they often fail only when they get to operating temperature. I have a box of motorcycle stators at home that measure in spec for resistance and do not work properly. Most provide weak spark when cold and no spark when hot. A resistance measurement is only going to tell you if the stator has totally failed, it does not tell you the stator is going to work
I thought I heard you say the two yellow wires
were lighting , later they/it (?) was/were battery charging
wire/s, in which case I guess one yellow would go
to a rectifier (?) , maybe it doesn't matter which one
connects to rectifier and which one is used for lighting?.
Is one of the yellows lighting and one for charging?
If your stator comes with just one yellow wire, then
that would likely be for lights period?
Great video!
Hope you can help on this issue:
A few days ago, while riding my SYM VS 125, a lot of smoke started coming out of the front of the bike and the engine started to fail. I turned off the ignition and cut the battery current.
At home I took it apart to see what was going on and the rectifier was visibly burnt.
I took the bike to a workshop where they changed the rectifier and the battery, but they didn't solve the problem. The new rectifier continues to heat up a lot and too fast, as if something is short circuiting.
As they couldn't solve the problem and it still cost me a few €€, I picked up the motorcycle with the fault.
Tests i have done:
- the battery is new and has 13.1V before the starter
- with the three yellow wires from the stator connected to the rectifier, the bike works fine at low revs, fails at medium and the rectifier heats up uncontrollably; with these wires disconnected from the rectifier, the bike works well at any speed, but as we know, the battery is not charged
- at idle the 3 yellow wires measure about 40V from stator
- the resistant test on stator show equal values on three wires; no ground conductivity; no open circuit on each coil
- apparently all the masses are well connected.
Any idea what it could be causing this recurrent failure of the rectifier?
Note: traditional G6Y carburetor engine with electronic rectifier and CDI, year 2010.
You still need to keep in mind even though bench testing this turns out to be good, once these components heat up there could be a short to ground once you heat up, so it would be good to test this on the bike after you run the motorcycle for a little bit and have everything hot... Or if you suspect this being bad. test it before you remove it while it is hot, metal tends to expand...
Thank you- beautifully clear and very useful! Can I do this with the stator on the bike- wires un plugged so available as in your bench test?
Seth Roger teaching me how to test a stator? Nicee
I assume you meant Seth Rogen?
+gulfsurfco hahaha yes, auto-correct...
Goldguy
Lol, dude even talks like him.
Hi when u check omh and it says 20 ohms. I cant do that test i only have 3 single yellow wires. So do i do that test , all the other tests are good. My first ohm test, like urs was 0.8 so it must be good on that also
My problem is my bike idles great, but struggles under a load. I'm told its the stator. But I'm also told it bench test and ohms out good. I'm lost.
Great easy short and to the point Video!!! Thanks! Some how to are like sleeping pills that turn into anger pills!!
hotmail.com▪●
Great job with the video. Clear instructions. Would have been good if you had covered how to test when the stator is installed in the bike. Also, I was wondering where you would look for proper resistance ranges for each of the circuits.
You can contact our tech support department at tech_support@trailtech.net and they can get you helped out.
Sweet video, much appreciated 🙂
How do you test for shorted turns? ie. if the coil has a 100 turns and 1 turn is shorted to itself it won't change the DC resistance of the but it will nullify most of the output of it.
Great video. However, I know you said that this a bench test, but can you do the same test if the stator is already in the bike?
Are these the same test procedures for a 3 phase stator ?
really appreciate your time n help
and how do I know which wires are for ignition ?
Good video. Unfortunately I have changed out many stators that have passed all these tests and ended up fixing the issue. Never 100% count on a bench tested stator to be a good stator. If the stator doesn't pass the tests then you have a good idea what the problem is.
Will a bad stator cause the bike not to light up at all?
@@datboilarry_8219 yes and no. Sometimes it will cut out spark sometimes it will just stop charging the battery, it depends on how the system is wired.
I enjoy helping people with this type of thing so feel free to ask as many questions as you want.
I guess the more reliable test would be to
gather operating voltages, ie; kicking or
cranking the engine over while taking voltage
readings. shrugs..
ty for helping us shadetree mechanics...lol i did as you sead and my old stator did not pass yhe ohms test got a new one now charging with np thank you
enjoyed the video...it was educational.
When checking resistance (ohms) between the two output leads, is it possible to have too little resistance? If mine reads only 0.1 or 0.2, is my stator bad?
I my stator has the continuity okey and the resistance is okay but it is not giving enough charge to the battery at higher rev, then what might be the problem. And the battery is 1 year old and does hold charge...
i tested my stators ignition wires like you showed in the video but instead of the continuous beep it just beeped once then went silent
Note: multimeter does the continuous beep with other wires.
what could be the problem? the ignition wire terminal or the wires itself?
Thanks Brian!! :)
Thanks guys, really helpful vid. I'll be doin this to my bike after work... gotta do process of elimination.🤦♂️😩
My ignition side of stator has 3 wires , one is ground in thinking ? The ohm meter beeps on that one . Please help
thanks a lot sir. now i know whats the problem of my bike.
I assume this is the same for any stator, like a jetski? Thanks
I've got a road registered pitbike a Braaap SS I have an electric start yx150cc in it ,and one of the yellow charge wires from the stator was going to a green wire on the rec/reg ,the stator seems to be to hot, as I've never had charge problems with this type of motor,its still charging but not enough
How many Volts, watts, Amps it produce?
My stator works perfectly at 1.1ohms. It all depends on what spec the manufacturer says it should be
Will a stator work in oil my 99 suzuki gz250 has oil in the stator no spark issues?
Hey trail tech my stator is ready 1.6 ohms from the yellow wires to the engine is that causing a short and is the reason I have no spark
I BADLY NEED HELP PLS ...TNXZ IF THEIRS A REPLY..IWANT TO KNOW THE RIGHT WIRING OF A 5PINS RECTIFIER TO STATOR???
WHEN I HOOK 2 YELLOW WIRES, I GOT 4.5 VOLT A/C AT IDLE AND 11 VOLTS A/C AT 2000 RPM. IS THAT TOO LOW
Hy when i meassure the ohms i get 0.7 all wires..evrything is good how i measure same with the video but i dont get any voltage to the cables when bike is running
can we put that yelow wire for charging to oem stator crf250r 🙏..
I recently replace my atv engine
The previous stator had a yellow and a white wire (which simply matched up with the wiring loom)
The new engine stator had two yellow wires(no white one)
Can I just connect one of the yellow wires to the white one. And the other yellow to yellow regardless
Yep. It's AC coming from the stator. Either to either is fine.
@@ridingdirty2412 thanx man
1:41 mine beeps it’s must be broke mine mines a aerox looks the exacly the same as yours
My audio meter shows 0,8 ohms.. Its from minarelli engine.. What does that mean.. Is it bad?
1999 ktm lc4 640
Tested stator on the bike. The green and white wire tested at 100 ohms is this within spec? Much appreciated
is this single phase yeah?
very clear ! tks. you really helped me ! Chears !
you say the charge wires are the most common to fail,what is the most common cause for them to fail
Heat is the most common cause of failure. When the motor gets overheated the oil gets extremely hot and actually starts to cook the stator. This will eventually cause the stator to fail.
Awesome vid thanks
Great video thanks
wait im lost. i have over 5 workshop manuals ( i have one for a yamaha vino open right now ) and they ALL say that there must be continuity to ground from yellow or white. something is wrong there buddy... even on a gy6 scooter there must be continuity. is it a different type of stator ? it look identical to mine on my gy6 scooter
Just for anyone watching this, this is for testing their stator. This won't work for a factory stator
I tested my new stator only hearing the beep on yellow wires not with red and blue why? it's brand new stator. Any comments?
I also didn't get a beep on the two wires jst a reading of 202
Nice one thanks for the video
Question what do you think about the Ricky Stator good yes or no
Good
hi man..i check my stator as like you show...all the results show that the stator is ok...but when i start the engine i check the volt and gives only 5.5v...i have a honda cm 125 6v system...you have any idea whats happen..??
These are testing instructions for our stators. Not an OEM stator. For the OEM stator testing you would need to contact Honda on how to test it and the values that you should have.
hi how can we find out how many amps it pushes out
What bike was this off?
do both yellow wires from the sator go to the yellow wires on the rec/reg ,one of mine was going to the green wire on the rec/reg its was charging but not enough
It would all depend on the stator and the reg/rec. Our video is just discussing how to test our stators. I would recommend checking with the manufactures wiring diagram to see how yours should be connected.
i have a problem where the startor starts the bike but their is not charging back for the battery
did you solve the problem? I have the same problem and electricians do not know what the problem is. I have new stator, new magneto, it has ground, bike starts but no voltage for lights.
Thank you so much!
what if you don't have a audio meter?
Check the resistance, or ohm measurement
is anyone know the diameter of the coil wire (the thick that is used for lights) ?
Hi i need help i fixed my yamaha phazer 480 piston and when i put it back together there's no spark on my spark plugs but the lights come on everytime i pull the pull start and before i was going to fix it there was what could the problem be?
Unfortunately there are a ton of things that could be causing this. I would recommend contact a Yamaha service center to get the proper troubleshooting steps to figure out what your problem could be.
How much is the tool
New subscribers here
hey! my friend gave me 3 stators and said their grounding isnt working... where stator should be grounded from?
+hellkristia9 That would all depend on the stator and what it is in. Some stators have a grounding lug on the body of the stator. Other stators have a ground lead off of the stator that is supposed to connect to a frame ground. I would recommend contacting the manufacture of the stator to find out how it is supposed to be grounded.
Subscribe can you confirm this is the same testing on a Yamaha aerox mate I’ve done your tests but when one pin is in any yellow and you
Touch the stator mine beeps I’ve had my bike with these problems basically on full throttle either on road or on stand the bike revs revs then basically cuts out like as if you switch the keys off just please confirm no beep for
Shorts is perfect mine beeps
How do I test a 1985 350x stator ? I think it has 1 ground coming out and 2 other wires .
Maybe one’s an exciter wire and the other for light power ?
Thanks
I like the video but not my results 😂😅
Same
How far out of spec can we be? I have a Trail Tech stator on a 2006 wr450f that is reading .6 ohms and 290 ohms.
Hey Driftingabstract what was your symptoms? I have the trail tech stator kit as well and have a weird popping onve the bike warms up I know this is 5 yrs ago but figured I would ask 😉
my ohms are reading good but i have no cont. on my white wire. (6pole) gy6 3wire
These troubleshooting instructions are for our stators that have a floated ground. For correct testing procedures for your stator you will want to contact the manufacture.
Thank you thank you thank you!!
Thanks man!
it doesnt peep on 2 of the wires is it good or bad
No beep between the two wires means a broken coil/wire, this is not good. A beep from any of the wire leads off the stator/coils to the steel stator itself is bad, that means the coil has shorted. Time for a new stator.
Will a faulty stator damage the rectifier
Nope
testing at the plug, when you 1st hit the start switch, i get a spark for about 2 - 3 cranks, then i get no spark for about 5 - 6 cranks, then as i continue cranking the motor over, i 'll a couple more sparks, and then nothing again ???????
What is this on? Year, make, model? Is it the OEM stator?
2002 Yamaha Kodiak 400
4x4 ATV
It is the original stator.
Unfortunately we do not have any info on how to test that stator or troubleshoot it. This instructional video for for the testing of a Trail Tech Stator. I would recommend contacting a Yamaha service center on how to troubleshoot this correctly.
Ok, thanks. How i discribed what it's doing, did that tell you it could be the stator ??????
how to check CDI multimeter in hindi
Thank You.
kl the bike starts easy with a bump and when running plenty o power just wont start wi a kick
Thanks i think i have a bad stator
what if my stator is reading 212.0 ohms?
lol....rekt
What bike is it ?
Yoooo your vid is wrong mate I have here 4 brands new stators no beep you ain’t making since mine all beep and there out of the box
thanks sir
ho do u check a stator on a ktm 125sx 02 anybody got ideas
+Ian Goldsmith The best thing I would recommend would be to contact your local KTM service center. They can give you the readings for that stock stator.
Its very nice good
no SPARK...bad stator ...85% of why
Its good
Is so confusing
thx